对已发生过或可能出现的故障形式，进行了过渡过程动态故障模拟计算和特性分析，获得了动力系统全系统动态故障模式库。
The dynamic fault simulating computation and characteristic analysis of transition process is performed under fault conditions, so the dynamic fault pattern base for whole power system is acquired.
而对内部故障的暂态计算，饱和因素的影响更严重，因为在内部故障的过渡过程中饱和程度也会随时间而变化。
With regard to the transient calculation of internal faults, the effect of saturation is more serious since the degree of saturation is changed during the fault.
操作过电压是由系统故障或开关操作等引起的过渡过程过电压。
System failure or switch operation caused transitional process overvoltages, which also called switching overvoltages.
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